Astrophysics News & Events

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100 years of Strong Gravity, 5 years of Gr@v

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Physics Aphitheatre
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To celebrate the centenial of General Relativity and simulataneously celebrate five years of the Gravitation Group at the University of Aveiro (Gr@v), established in the Fall 2010, Gr@v will organize a two days event, on 25-26 November 2015. This event will also mark the closing of the "Numerical Relativity and High Energy Physics" Marie Curie IRSES action, an international partnership which was coordinated by our group that ran over the period 2012-2015. Finally, the event will also be integrated in the IDPASC doctoral programme.

At MG14

Gr@v team at the 14th Marcel Grossmann Meeting, in Rome: (from left to right) M. Wang, H. Rúnarsson, J. C. Degollado (former member), E. Radu, C. Herdeiro, M. Sampaio and J. Rosa, where we have presented ten talks on the various group's research lines.

Under Rome's July hot sun, this workshop could be described modifying Edison's quote: "Science can really be 99% perspiration..."

Chemical abundances of planet hosts: searching the star-planet connection

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Elisa Delgado Mena (IA - U. Porto)
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GAP room
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Abstract: The discovery of nearly 2000 extrasolar planets has given us the opportunity to thoroughly study their host stars. The determination of chemical abundances provide us with unique information not only about the stellar atmospheres but also about the processes that take place inside the stars and how they have been formed. The first difference we came across between stars with and without planets was that the former are on average more metallic but other interesting trends have been reported during these years. I will make a short review about these studies and focus on the latest results obtained by our group.

Nearby Stars as gravity detectors

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Ilidio Lopes (CENTRA - IST)
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GAP room
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Abstract: Sun-like oscillations have been discovered in five hundred main sequence and sub-giant stars and in more than twelve thousand red giant stars in the solar neighbourhood. In this talk, I will argue how this network of natural detectors could be used to probe fundamental physics, including dark matter and gravitational waves. Moreover, these star detectors can complement the experimental research done on Earth. Moreover, this observational network of stars could be used to make other type of gravity tests, as unlike experimental detectors, it should be possible to follow the progression of gravitational waves throughout space. The continuous observation and monitoring of the oscillation spectra of the stars around us, within a sphere of up to one thousand parsecs, could help on the discovery of gravitational waves originating in our Galaxy or even elsewhere in the Universe.